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Ket [755]
3 years ago
9

use the substitution method to solve the system of equations . choose the correct ordered pairs x+y=5 y=7 A.(12,7) B.(-12,7) C.

(-2,7) D.(2,7)
Mathematics
1 answer:
Marta_Voda [28]3 years ago
8 0

Answer:

C

Step-by-step explanation:

given y = 7 then substitute this value into the other equation and solve for x

x + 7 = 5 ( subtract 7 from both sides )

x = - 2

solution is (- 2, 7 ) → C


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